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authorRobert ABEL <rabel@cit-ec.uni-bielefeld.de>2015-02-27 18:56:53 +0300
committerRoger Quadros <rogerq@ti.com>2015-03-06 13:39:48 +0300
commit2e67690137f3a7bac660edd548f8846709c55381 (patch)
tree33262ac06753bd02df92a27fe520f24761dd1847 /include/linux/omap-gpmc.h
parentf585070b91950a0269eb20f497cceeee0aeefe0e (diff)
downloadlinux-2e67690137f3a7bac660edd548f8846709c55381.tar.xz
ARM OMAP2+ GPMC: calculate GPMCFCLKDIVIDER based on WAITMONITORINGTIME
The WAITMONITORINGTIME is expressed as a number of GPMC_CLK clock cycles, even though the access is defined as asynchronous, and no GPMC_CLK clock is provided to the external device. Still, GPMCFCLKDIVIDER is used as a divider for the GPMC clock, so it must be programmed to define the correct WAITMONITORINGTIME delay. Calculate GPMCFCLKDIVIDER independent of gpmc,sync-clk-ps in DT for pure asynchronous accesses, i.e. both read and write asynchronous. Signed-off-by: Robert ABEL <rabel@cit-ec.uni-bielefeld.de> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Roger Quadros <rogerq@ti.com>
Diffstat (limited to 'include/linux/omap-gpmc.h')
-rw-r--r--include/linux/omap-gpmc.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/omap-gpmc.h b/include/linux/omap-gpmc.h
index c2080eebbb47..7dee00143afd 100644
--- a/include/linux/omap-gpmc.h
+++ b/include/linux/omap-gpmc.h
@@ -163,7 +163,8 @@ extern unsigned int gpmc_ticks_to_ns(unsigned int ticks);
extern void gpmc_cs_write_reg(int cs, int idx, u32 val);
extern int gpmc_calc_divider(unsigned int sync_clk);
-extern int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t);
+extern int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t,
+ const struct gpmc_settings *s);
extern int gpmc_cs_program_settings(int cs, struct gpmc_settings *p);
extern int gpmc_cs_request(int cs, unsigned long size, unsigned long *base);
extern void gpmc_cs_free(int cs);